DE4034934C2 - Tandem nozzle for processing thermoplastic materials - Google Patents
Tandem nozzle for processing thermoplastic materialsInfo
- Publication number
- DE4034934C2 DE4034934C2 DE19904034934 DE4034934A DE4034934C2 DE 4034934 C2 DE4034934 C2 DE 4034934C2 DE 19904034934 DE19904034934 DE 19904034934 DE 4034934 A DE4034934 A DE 4034934A DE 4034934 C2 DE4034934 C2 DE 4034934C2
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- nozzle body
- tandem
- distance
- thermoplastic materials
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012815 thermoplastic material Substances 0.000 title claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C2045/2788—Nozzles having a polygonal cross section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
- B29C2045/2813—Common drive means for several needle valves
Description
Die Erfindung betrifft eine Tandemdüse zum Verarbeiten von thermoplastischen Massen im Spritzgießverfahren, wobei jede Düse einen Düsenkörper mit einem zentralen Masseleitkanal und einer darin geführten Verschlußnadel aufweist, und die der Düsenöffnung abgewandten Enden der Verschlußnadel an einer gemeinsamen Kupplung gehalten sind, die mittels eines pneumatischen/hydraulischen Zylinder-/Kolbenaggregates verschiebbar ist.The invention relates to a tandem nozzle for processing of thermoplastic materials by injection molding, each nozzle having a nozzle body with a central one Earth lead channel and a locking needle guided therein has, and the ends facing away from the nozzle opening Locking pin held on a common coupling are by means of a pneumatic / hydraulic Cylinder / piston unit is displaceable.
Zum Verarbeiten von thermoplastischen Massen im Spritzgießverfahren werden sowohl Einzeldüsen als auch Düsen mit mehreren Anspritzköpfen in sogenannten Mehrfachwerkzeugen verwendet. Bei diesen Mehrfach werkzeugen ist der Abstand der einzelnen Anspritzköpfe durch die Baugrößen der Düsen bestimmt, wobei diese Baugrößen in vielen Fällen zu groß sind. Die beispiels weise bei der Erzeugung von kleinen Kunststoffteilen gebrauchten Kleinstabstände, die damit vorgegeben sind, lassen sich so nicht erreichen, was zur Folge hat, daß relativ große Werkzeuge gebraucht werden, die auf entsprechend großen Maschinen eingesetzt werden. Der Nachteil besteht darin, daß damit die Herstellung dieser Produkte unwirtschaftlich und mit einer Energiever geudung verbunden ist.For processing thermoplastic materials in the Injection molding processes are both individual nozzles as well Nozzles with multiple injection heads in so-called Multiple tools used. With these multiple tools is the distance between the individual injection heads determined by the sizes of the nozzles, these Sizes are too large in many cases. The example wise in the production of small plastic parts used small rod distances, which are given cannot be achieved in this way, with the result that relatively large tools are needed that are on correspondingly large machines are used. Of the The disadvantage is that the manufacture of this Products uneconomical and with an energy ver is connected.
Der Erfindung liegt die Aufgabe zugrunde, eine Tan demdüse der eingangs genannten Art so auszubilden, daß eine Anpassung an den benötigten Kleinstabstand der Anspritzköpfe zueinander mit einfachen Mitteln erreich bar ist.The invention has for its object a tan demdüse of the type mentioned so that an adjustment to the required small bar spacing Injection heads reach each other with simple means is cash.
Diese Aufgabe wird nach der Erfindung in Verbindung mit dem Oberbegriff dadurch gelöst, daß die an einer Heißkanalverteilerplatte und Formplatte gehaltenen Düsen mit ihrem im Querschnitt kreisförmigen Düsenkörper an den einander zugewandten Seiten ebene Anlageflächen aufweisen, die parallel zu den Achsen der Düsenkörper verlaufen, wobei Kreissegmente der Düsenkörper derart abgetragen sind, daß der benötigte Abstand der Düsenöffnungen erreicht ist.This object is achieved according to the invention in connection with the preamble that on a hot runner manifold and mold plate held nozzles with their circular in cross section Nozzle body level on the sides facing each other Have contact surfaces that are parallel to the axes of the Nozzle body run, with segments of the circle Nozzle bodies are so worn that the required Distance of the nozzle openings is reached.
Eine vorteilhafte Ausführungsform besteht darin, daß die Kreissegmente der Düsenkörper auf einen Minimalabstand der Düsenöffnungen abgetragen sind, wobei zum Verändern des Abstandes Zwischenstücke zwischen die Anlageflächen einlegbar sind.An advantageous embodiment is that the Circular segments of the nozzle body at a minimum distance of the nozzle openings are removed, with the Changing the distance between the spacers Contact surfaces can be inserted.
Die Erfindung bringt den Vorteil, daß bei der Anwendung als Tandemdüse mit nur einem Zylinder ein minimaler Düsenabstand in einem Mehrfachwerkzeug ermöglicht wird. Damit können die Kavitätenabstände minimiert und entsprechend viele Teile auf engstem Raum untergebracht werden. Dadurch lassen sich ein geringerer Platzbedarf und niedrigere Kosten bei der Herstellung solcher Kunststoffteile erzielen.The invention has the advantage that when used a minimal as a tandem nozzle with only one cylinder Nozzle spacing in a multiple tool is made possible. The cavity distances can thus be minimized and correspondingly many parts housed in a very small space become. This means that less space is required and lower cost of manufacturing such Achieve plastic parts.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung erläutert.The following is an embodiment of the invention explained.
Es zeigenShow it
Fig. 1 einen teilweisen Längsschnitt durch eine Ausführungsform einer solchen Tandemdüse und Fig. 1 shows a partial longitudinal section through an embodiment of such a tandem nozzle and
Fig. 2 eine Ansicht "X" dieser Tandemdüse gemäß Fig. 1. Fig. 2 is a view "X" of the tandem of FIG. 1.
Die in der Zeichnung dargestellte Tandemdüse besteht aus zwei nebeneinander angeordneten Düsen 1, 1′, wobei jede Düse einen Düsenkörper 2 mit einem zentralen Masseleit kanal 3 aufweist. Am unteren Ende besitzt der Düsenkör per 2 eine Düsenöffnung 4. Zum Verschließen dieser Öffnung 4 dient jeweils eine im Masseleitkanal 3 angeordnete Verschlußnadel 5, die in einer Führungs buchse 5′ geführt ist und deren Köpfe 6 an einer gemeinsamen Kupplung 7 gehaltert sind. Zum Verschieben der Verschlußnadeln 5 dient ein Zylinder-/Kolbenag gregat, bestehend aus einem Zylinder 8 und Kolben 9 mit Ölzufuhrkanälen 10. Dieses Aggregat 8, 9 ist an einer Formplatte 11 gehaltert, während die Düsen 1, 1′ an einer Heißkanalverteilerplatte 12 und einer Formplat te 13 angeordnet sind. Weiterhin sind die Düsen 1, 1′ mit einer Heizung 14 versehen.The tandem nozzle shown in the drawing consists of two juxtaposed nozzles 1 , 1 ', each nozzle having a nozzle body 2 with a central channel 3 Masses. At the lower end, the nozzle body has a nozzle opening 4 per 2 . For closing this opening 4 serves in each case one is arranged in the closure needle Masseleitkanal 3 5, the socket in a guide 5 is guided 'and the heads of which are supported on a common clutch 7. 6 For moving the closure pins 5, a cylinder / Kolbenag serves gregat, consisting of a cylinder 8 and piston 9 with oil supply ducts 10th This unit 8 , 9 is held on a mold plate 11 , while the nozzles 1 , 1 'are arranged on a hot runner manifold plate 12 and a mold plate 13 . Furthermore, the nozzles 1 , 1 'are provided with a heater 14 .
Zum Erzielen des gewünschten Abstandes 15 (Fig. 2) der beiden Düsenöffnungen 4 werden die einzelnen Düsen 1, 1′ an ihren einander zugewandten Seiten derart bearbeitet, daß ebene Anlageflächen 16 entstehen, die parallel zu den Achsen (18) der Düsen 1, 1′ bzw. den Verschlußna deln 5 verlaufen. Hierbei werden von den im Querschnitt kreisförmigen Düsenkörpern 1, 1′ Kreissegmentabschnit te 17 abgeschliffen.To achieve the desired distance 15 ( Fig. 2) of the two nozzle openings 4 , the individual nozzles 1 , 1 'are machined on their mutually facing sides so that flat contact surfaces 16 are formed which are parallel to the axes ( 18 ) of the nozzles 1 , 1st 'Or the closure needle 5 run. Here are of the circular cross-section nozzle bodies 1 , 1 'Kreissegmentabschnit te 17 ground.
Man kann diese Düsenkörper 1, 1′ aber auch derart bearbeiten, daß sich die Düsenöffnungen 4 in einem geringstmöglichen Abstand 30 zueinander befinden und zum Erzielen eines größeren Abstandes 15 Zwischenstücke an den ebenen Anlageflächen 16 eingesetzt werden.You can edit this nozzle body 1 , 1 'but also such that the nozzle openings 4 are at a minimum distance 30 from each other and 15 spacers are used on the flat contact surfaces 16 to achieve a greater distance.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19904034934 DE4034934C2 (en) | 1990-11-02 | 1990-11-02 | Tandem nozzle for processing thermoplastic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19904034934 DE4034934C2 (en) | 1990-11-02 | 1990-11-02 | Tandem nozzle for processing thermoplastic materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE4034934A1 DE4034934A1 (en) | 1992-05-07 |
| DE4034934C2 true DE4034934C2 (en) | 1994-03-17 |
Family
ID=6417558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19904034934 Expired - Fee Related DE4034934C2 (en) | 1990-11-02 | 1990-11-02 | Tandem nozzle for processing thermoplastic materials |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4034934C2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7553150B2 (en) | 2006-06-19 | 2009-06-30 | Mold-Masters (2007) Limited | Valve-pin actuating device for a hot runner apparatus |
| US7618253B2 (en) | 2007-10-19 | 2009-11-17 | Mold-Masters (2007) Limited | Multiple-gate injection molding apparatus |
| US7766646B2 (en) | 2007-06-22 | 2010-08-03 | Mold-Masters (2007) Limited | Injection molding apparatus with plate actuation of valve pins |
| EP4034787A4 (en) * | 2019-09-23 | 2023-10-18 | Incoe Corporation | Actuator for controlling multiple injection molding valve pins |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4206318C2 (en) * | 1992-02-29 | 1994-06-16 | Otto Maenner | Multiple needle valve nozzle for injection molds |
| DE19627680A1 (en) * | 1996-07-10 | 1998-01-15 | Lederer Gmbh | Needle valve nozzle system for a plastic injection mold, in particular for processing silicone rubbers |
| DE50103317D1 (en) * | 2000-01-31 | 2004-09-23 | Guenther Heiskanaltechnik Gmbh | INJECTION MOLDING TOOL AND NOZZLE ARRANGEMENT |
| DE102011002585A1 (en) * | 2011-01-12 | 2012-07-12 | Mht Mold & Hotrunner Technology Ag | injection molding machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2428185A1 (en) * | 1974-06-11 | 1976-01-02 | Modesto Massano | Multiple injection mouldings made in triple plate press - with all ducts to individual moulds heated to reduce waste |
| DE3733363A1 (en) * | 1987-10-02 | 1989-04-13 | Horst Prinz | Hot-runner needle-valve nozzle for processing thermoplastic materials |
-
1990
- 1990-11-02 DE DE19904034934 patent/DE4034934C2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7553150B2 (en) | 2006-06-19 | 2009-06-30 | Mold-Masters (2007) Limited | Valve-pin actuating device for a hot runner apparatus |
| US7766646B2 (en) | 2007-06-22 | 2010-08-03 | Mold-Masters (2007) Limited | Injection molding apparatus with plate actuation of valve pins |
| US7618253B2 (en) | 2007-10-19 | 2009-11-17 | Mold-Masters (2007) Limited | Multiple-gate injection molding apparatus |
| US8152513B2 (en) | 2007-10-19 | 2012-04-10 | Mold-Masters (2007) Limited | Multiple-gate injection molding apparatus |
| US8414285B2 (en) | 2007-10-19 | 2013-04-09 | Mold-Masters (2007) Limited | Multiple-gate injection molding apparatus |
| EP4034787A4 (en) * | 2019-09-23 | 2023-10-18 | Incoe Corporation | Actuator for controlling multiple injection molding valve pins |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4034934A1 (en) | 1992-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |